Critical temperature and superconducting gap in a model of high-Tc superconductivity

C. A. Balseiro; M. E. Foglio

doi:10.1103/PhysRevB.40.9288

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Critical temperature and superconducting gap in a model of high-Tc superconductivity

C. A. Balseiro, M. E. Foglio

DOI 10.1103/PhysRevB.40.9288 · Physical Review B

T1

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Abstract

A pairing mechanism in which attractive intersite interaction arises from the highly correlated electronic structure of the superconducting ceramics has been recently proposed by Balseiro and collaborators. This model is studied here in the limit of infinite Coulomb repulsion (i.e., Ũ→∞) by employing standard decoupling techniques of the relevant Green’s functions. We derive the critical temperature Tc and the superconducting gap Eg as a function of the relevant parameters of the model. The ratio Eg/Tc obtained is not a constant and is different from the universal value of BCS superconductivity.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
La2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown